Hypertext Webster Gateway: "Groundsill"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Groundsel \Ground"sel\, Groundsill \Ground"sill`\, n. [Ground +
sill.]
See {Ground plate}
(a), under {Ground}
Additional Hypertext Webster Gateway Lookup
Gateway by dict@stokkie.net
stock only wrote the gateway and does not have any control over the contents;
see the Webster Gateway FAQ,
and also the Back-end/database links and credits.